80 lines
1.3 KiB
Go
80 lines
1.3 KiB
Go
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package service
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import (
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"errors"
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"fmt"
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"os"
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"path/filepath"
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"golang.org/x/sys/windows/svc/eventlog"
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"golang.org/x/sys/windows/svc/mgr"
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)
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// Install ensures a windows service is active
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func Install(name, desc string) error {
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exepath, err := getExecPath(os.Args[0])
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if err != nil {
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return err
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}
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return installService(name, desc, exepath)
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}
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func getExecPath(exepath string) (string, error) {
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p, err := filepath.Abs(exepath)
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if err != nil {
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return "", err
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}
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fi, err := os.Stat(p)
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if err == nil {
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if fi.Mode().IsRegular() {
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return p, nil
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}
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}
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if 0 == len(filepath.Ext(p)) {
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var err error
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p += ".exe"
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fi, err = os.Stat(p)
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if nil != err {
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return err
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}
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}
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if !fi.Mode().IsRegular() {
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// this should never happen
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return "", errors.New("not a regular file")
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}
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return p, nil
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}
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func install(name, desc, exepath string) error {
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m, err := mgr.Connect()
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if nil != err {
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return err
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}
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defer m.Disconnect()
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s, err := m.OpenService(name)
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if nil == err {
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s.Close()
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return nil
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}
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s, err = m.CreateService(name, exepath, mgr.Config{DisplayName: desc}, "is", "auto-started")
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if err != nil {
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return err
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}
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defer s.Close()
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err = eventlog.InstallAsEventCreate(name, eventlog.Error|eventlog.Warning|eventlog.Info)
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if nil != err {
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s.Delete()
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return fmt.Errorf("could not install system service: %v", err)
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}
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return nil
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}
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